Machine for forging horseshoe-nails.



No. 65!,586. Patented June l2, I900. H. A. WILLIAMS.

MACHINE FOR FORGING HORSESHOE NAILS.

(Application filed Mar. 20, 1900.)

(No Model.) 4 Sheats-Sheet I.

Patented June i2, I900.

H. A. WILLIAMS. v MACHINE FOR FORGING HORSESHDE NAILS.

(Application filed Mar. 20,'1900.) (No Model.) 4 Sheets-Sheet 2.

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No. 65l ,586. Patented-lune I2, I900. H. A. WILLIAMS.

MACHINE FOR'FOBGING HOBSESHOE NAILS.

(A lication filed Mar. 20, 1900. (No Modgl.) v Sheets -Sheet 3.

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No.-65l,586. Patehfed lune l2, I900. H. A. WILLIAMS.

MACHINE FOR FDRGING HORSESHOE NAILS.

(Appliation filed 20,1900.) (No Model.) 4 Sheets-Sheet 4.

NrTED STATES HENRY ALEXIS lVILLIAMS, OF QUINCY; MASSACHUSETTS, ASSIGNORTO THE PUTNAM NAIL COMPANY, OF BOSTON, MASSACHUSETTS.

MACHINEFOR FORGING HORSESHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 651,586, dated June12,1900. Application filed March 20, 1900. Serial No. 9,431. (No model.)

To (ZZZ whom, it may concern: Be it known that I, HENRY ALEXIS VVIL-LIAMS, a citizen of the United States, residing at Quincy, in the countyof Norfolk and State 5 of Massachusetts, have invented certainImprovements in Machines for Forging Horseshoe-Nails and other Articles,of whichthe following is a specification.

This invention relates to an improvement on the machine for forginghorseshoe-nails and other articles for which Letters Patent of theUnited States, No. 625,229, were grantto me May 16, 1899; and myinvention consists in certain improvements in the mechant5 ism by meansof which the end of the blank or partly-finished nail which forms thehead is placed at the proper moment within the recesses of theroller-dies, so that a head of the proper length and shape may beformed,

as desired. The device employed in the machine described in theaforesaid patent consists of a pair of cam-operated grippers which weresecured to aslide and after seizing the blank or partly-finished nailcarried it down to its proper place in the dies. When, however, therolls were revolving at a very high speed, these grippers were liable toslip and sometimes failed to carry the blank or partlyfinished nail farenough into the dies to produce a head of the proper length.

To overcome this difficulty is the object of my present invention, whichconsists in the combination, with a pair of die-grooved rolls and aconducting tube or guideway, through 3 5 which the blanks orpartly-finished nails pass to said rolls, of a sliding spring-pressednailpusher adapted to enter the conductor through a slot or opening inone of its Walls after the blank has been dropped onto the rolls beneathand bear onthe upper end of the nail-blank with a spring-pressuresufficient to cause it to be instantly and fully forced down to thebottom of the dies the mo mentthe latter are brought into a position to4 5 receive it, thereby avoiding anypossibility of the head of the blankor partly-finished nail failing to reach its proper position in the diesand insuring the formation of a head of the required length when therolls are running at a high speed, as hereinafter more fully described.

- In the accompanying drawings, Figure 1 is a horizontal section of anail-forging machine, showing a pair of its die-grooved rolls, thenail-conductor leading thereto, and my improved nail-pushing device forinsuring the proper placing of the nail-blank within the dies of therolls. Fig. 2 is a front elevation of a portion of the machine, showingmy nailpushing device applied thereto. Fig. 3 is an enlarged verticalsection on the line 3 3 of Fig. 2. mailpusher-actuating mechanism andthe Fig. at is a perspective view of the neath, showing in dotted linesthe actuatingarm engaging a slot in the side of the slide, as isnecessary, owing to the die-grooved rolls being arranged in pairs atright angles to each other.

In the said drawings, A represents the framework of the machine, ofproper shape to support the Working parts.

B B denote the die-grooved rolls of the machine, which are arranged inpairs beneath each other, the two rolls of a pair being connected torevolve together by gears b Z; and each pair being arranged at rightangles to the pair immediately above or below it in the same manner asshown and described in my aforesaid patent, No. 625,229.

The rolls B B are supported in boxes 15, o

mounted in housings O, secured to the vertical wall of the framework A.The journal of one roll of each pair is elongated and connected with ashaft 20in line therewith by means of a coupling 21, and eachoof said 5shafts 20 is provided with a gear 22, which meshes with another gear 23,receiving motion by means of shafts and gears from the driving-shaft ofthe machine.

DDrepresenttheconducting-tubes,through which the nail-blanks orpartly-made nails pass from one pair of die-grooved rolls to the pairnext beneath. Each of the conductingtubes D is provided on one side witha narrow longitudinal slot 25, enlarged at its upper end at 26, as shownin Figs. 2 and 4, for the entrance of the nail-pusher to be presentlydescribed. In suitable guide-grooves 28, Figs. 1, 4t, and 5, in each ofthe conducting-tubes D is fitted to reciprocate vertically thereon aslide E, to the upper end of which is pivoted between side pieces 0 c anail-pusher G, consisting of a main portion 30, having a narrow neck 31,extending inwardly and downwardly therefrom at an angle, as shown inFigs. 3, 5, 6, and 7, and provided at its end with a head 32, which isadapted, when the slide E descends, to enter and pass through theenlargement 26 of the slot 25 after a nailblank or partly-made nail haspassed down the conductor into the position shown in Fig. 3, with itslower or head portion in contact with the rolls B B.

33 is a fiat spring secured to the lower end of the nail-pusher G, withits upper bent end bearing on the top of the slide E in such manner asto constantly exert an inward pressure on the pivoted nail-pusher, sothat its head 32 will enter and pass through the opening 26 when broughtinto line therewith, the narrow neck 31 fitting the narrow portion ofthe slot 25 and passing down through the same as the pusher is carrieddown by the slide E to bring its head 32 into contact with the upper endof the nail-blank, as shown in Fig. 3. On the ascent of the slide E thenail-pusher is withdrawn from the tube D against the resistance of thespring 33 by the contact of the inner edge of the inclined neck 32 withthe upper end 19 of the slot 25, on which it rides as it is drawnupward, the head 32 passing out of the opening 26 and bearing againstthe outside of the conducting-tube D during the remainder of the upwardmovement of the slide, as shown in Fig. 4 and dotted in Fig. 3, thusleaving the interior of the tube D free and clear for the passage of thenextnailblank to the rolls beneath.

The mechanism by which the slide E is reciprocated to produce thedesired movements of the nail-pusher and cause the latter to exert aspring-pressure on the nail-blank when the latter is in contact with therolls will now be described.

I is a horizontal shaft mounted in bearings in a bracket K, secured tothe adjacent housing 0. To this shaft is secured an arm 35, the innerend of which engages a slot 17 in the slide E, as shown in Figs. 6 and7. To one end of the shaft I is secured a forked crank-arm 36, which isengaged by a pin 37 on a lever 38, fulcrumed at 39 on the bracket K, andprovided at the end of its lower arm with a cam-roll 16, acted on by acam 40 on the shaft 20, connected with one of the diegrooved rolls 1 theroll being kept in contact with the cam during the greater portion ofits revolution by a spring 41, soon red to the bracket K, and exerting adownward presdropped onto the rolls the cam 40permits the spring 41 todepress the outer end of the lever 38, which through the connectionsdescribed instantly depresses the slide E, cansin g the head 32 of thenail-pusher to pass into the conducting-tube D through the opening 26and descend until it reaches the upper end of the blank or nail 18, uponwhich it will rest with a spring-pressure due to the action of thespring 41, the cam in its revolution then passing for a short timeentirely out of contact with the cain-roll 16, leaving said spring 41free to exert its full force through the medium of the lever mechanismupon the nailpusher, which in turn exerts a downward spring-pressu re onthe nail-blank during the time that the head-forming recesses 45 in thedies of the rolls B B are being brought around into a position toreceive the lower end of the blank to form the head of the nail. Themoment that the recesses 45 of the dies reach the lower end of the blankit is instantly carried down to the bottom of said recesses by thestrong spring-pressure of the nail-pusher on its upper end, so that theblank is absolutely certain to reach its proper position in said dieswithout regard to the speed with which the rolls may be revolving. Asthe cam which controls the operation of the lever mechanism connectedwith the nail-pusher is secured to a shaft directly connected with thejournal of one of the die-grooved rolls, it follows that the nail-pusherwill always be ready to act the moment that the head-forming recesses ofthe dies are in a position to receive the lower end of the blank. Allliability of the dies failing to take the blank at the right moment isthus entirely avoided, and the formation of a head of the desired lengthis thereby at all times insured. As the blank is drawn down between therolls the nailpusher is raised out of the tube D and the operationcontinues as before.

The lever mechanism of the slide belonging to the next conducting-tubebeneath or above is arranged at right angles to that just described, asshown in Figs. 1 and 2, and in this case the arm 35 engages a slot onthe side of the slide E, as shown in Fig. 7, instead of one in the frontof the slide, as shown in Fig. 6.

What I claim as my invention, and desire to secure by Letters Patent,is-- 1. In a nail-forging machine, the combination with a pair ofdie-grooved rolls and a nailconducting tube or guideway leading thereto,of a reciprocating nail-pusher adapted to enter said tube after a nailor blank has been dropped therein, and be subsequently with- ITS drawntherefrom to permit of the passage of another blank or nail, mechanismfor raising the nail-pusher and withdrawing the same from the conductor,and a spring acting on said mechanism, whereby the nail-pusher is causedto descend, enter the conductor and exert a spring-pressure on the blankor nail therein to force the same into the dies of the rolls beneath,substantially as described.

2. In a nail-forgingmachine, the combination with a pair of die-groovedrolls and anailconducting tube or guideway leading thereto and providedwith a longitudinal slot or opening, of a slide, a nail-pusher pivotedto said slide and provided with a spring, whereby it is caused to enterthe conductor as the slide descends, levermechanism connected with saidslide for raising the same, whereby the nail-pusher is withdrawn fromthe conductor, and a spring acting on said lever mechanism to depressthe slide, whereby the nail-pusher is caused to enter the conductor-andexert a downward spring-pressure on the blank or nail therein to forcethe same into the dies of the rolls beneath as soon as the latter are ina position to receive it, substantially as described.

3. In a nail-forging machine, the combination with a pair of die-groovedrolls, and a slotted conducting tube or guideway leading thereto, of aslide movable longitudinally on said conducting-tube, a nail-pusherpivoted to said slide and provided with a spring exerting an inwardpressure thereon, whereby it is caused to enter said conductor as theslide descends, lever mechanism connected with said slide for raisingthe same and withdrawing the pusher from the conductor, and a springacting on said lever mechanism for depressing the slide and therebycausing the pusher when within the conductor to exert a downwardspring-pressure on the blank or nail to force the same into the dies ofthe rolls beneath, substantially as described.

4. In a nail-forging machine, the combination with a pair of die-groovedrolls, and a conducting tube leading thereto provided with alongitudinal slot or opening, of a slide movable longitudinally on saidconductingtube, a nail-pusher pivoted to said slide and provided with aspring exerting an inward pressure thereon, whereby it is caused toenter the conductor as the slide descends, lever mechanism connectedwith said slide, a cam for actuating said lever mechanism in onedirection to raise the slide, and a spring acting on said mechanism toproduce a downward movement of the slide to cause the nail-pusher toenter the conductor and exert a springpressure on the blank or nailtherein to force the same into the dies of the rolls beneath,substantially as described.

5. In a nail-forging machine, the combination with a pair ofdie-groovedrolls, and a conducting tube leading thereto provided with alongitudinal slot or opening, of a reciprocating slide, a nail-pusherpivoted to said slide and adapted to enter the conductingtube and bewithdrawn therefrom, a spring exerting an inward pressure on saidnailpusher, the latter having an inwardly-extending inclined or angularportion adapted as it rises to bear against the upper edge of the slotin the conducting-tube, whereby the pusher is withdrawn from saidconducting tube against the resistance of its spring, substantially asdescribed.

6. In a nail-forging machine, the combination with a pair of die-groovedrolls, and a conducting-tube leading thereto, said tube having alongitudinal slot provided with an enlargement at its upper end, of averticallyreciprocating nail-pusher provided with a spring exerting aninward pressure thereon,

said nail-pusher consisting of a body portion sliding on the outside ofthe cond ucting-tube, a narrow neck extending inward from the bodyportion at an angle thereto and adapted to slide Within the narrowportion of the slot in the conducting-tube, and a head at the end ofsaid neck adapted to pass through the en-. largement of said slot andexert a downward.

spring pressure on the blank or nail in the conducting-tube, saidangular neck portion HENRY ALEXIS WILLIAMS.

In presence of- P. E. TESOHEMAGHER, R. HENRY MARSH.

